The Holocene environmental history of a small coastal lake on the north-eastern Kamchatka Peninsula
A radiocarbon and tephra-dated sediment core from Lifebuoy Lake, located on the north-east coast of Kamchatka Peninsula, was analysed for pollen, spores, diatoms, chironomids and tephra in order to uncover regional environmental history. The 6500-year environmental history of Lifebuoy Lake correlate...
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ftubkoeln:oai:USBKOELN.ub.uni-koeln.de:38871 2023-05-15T13:15:06+02:00 The Holocene environmental history of a small coastal lake on the north-eastern Kamchatka Peninsula Solovieva, N. Klimaschewski, A. Self, A. E. Jones, V. J. Andren, E. Andreev, A. A. Hammarlund, D. Lepskaya, E. V. Nazarova, L. 2015 https://kups.ub.uni-koeln.de/38871/ eng eng ELSEVIER SCIENCE BV Solovieva, N., Klimaschewski, A., Self, A. E., Jones, V. J., Andren, E., Andreev, A. A., Hammarlund, D., Lepskaya, E. V. and Nazarova, L. (2015). The Holocene environmental history of a small coastal lake on the north-eastern Kamchatka Peninsula. Glob. Planet. Change, 134. S. 55 - 67. AMSTERDAM: ELSEVIER SCIENCE BV. ISSN 1872-6364 ddc:no doc-type:article publishedVersion 2015 ftubkoeln 2022-11-09T07:26:03Z A radiocarbon and tephra-dated sediment core from Lifebuoy Lake, located on the north-east coast of Kamchatka Peninsula, was analysed for pollen, spores, diatoms, chironomids and tephra in order to uncover regional environmental history. The 6500-year environmental history of Lifebuoy Lake correlates with the broad regional patterns of vegetation development and climate dynamics with both diatoms and chironomids showing near-synchronous changes. Between ca. 6300 and 3900 cal yr BP, the lake ecosystem was naturally enriched, with several Stephanodiscus species dominating the diatom plankton. This natural eutrophication state is likely to be due to a combination of the base-rich catchment geology, the fertilisation effect of several fires in the catchment, silica input from tephra layers and, possibly, nitrogen input from seabirds. The substantial tephra deposit at about 3850 cal yr BP might have stopped sedimentary phosphorus from entering the lake water thus decreasing the trophic state of the lake and facilitating the shift in diatom composition to a benthic Fragiliariaceae complex. Both diatoms and chironomids showed simultaneous compositional changes, which are also reflected by statistically significant changes in their rates of change 300-400 years after the arrival of Pinus pumila in the lake catchment. The rapid increase in both total diatom concentration and the percentage abundance of the large heavy species, Aulacoseira subarctica might be a response to the change in timing and intensity of lake spring turnover due to the changes in the patterns of North Pacific atmospheric circulation, most notably westward shift Of the Aleutian Low. The two highest peaks in A. subarctica abundance at Lifebouy Lake occurred during opposite summer temperature inferences: the earlier peak (3500-2900 cal yr BP) coincided with warm summers and the latter peak (300 cal yr BP-present) occurred during the cold summer period. These imply that A. subarctica shows no direct response to the changes of summer air temperature. ... Article in Journal/Newspaper aleutian low Kamchatka Kamchatka Peninsula Cologne University: KUPS Kamchatka Peninsula ENVELOPE(160.000,160.000,56.000,56.000) Lifebuoy Lake ENVELOPE(-97.355,-97.355,58.475,58.475) Pacific |
institution |
Open Polar |
collection |
Cologne University: KUPS |
op_collection_id |
ftubkoeln |
language |
English |
topic |
ddc:no |
spellingShingle |
ddc:no Solovieva, N. Klimaschewski, A. Self, A. E. Jones, V. J. Andren, E. Andreev, A. A. Hammarlund, D. Lepskaya, E. V. Nazarova, L. The Holocene environmental history of a small coastal lake on the north-eastern Kamchatka Peninsula |
topic_facet |
ddc:no |
description |
A radiocarbon and tephra-dated sediment core from Lifebuoy Lake, located on the north-east coast of Kamchatka Peninsula, was analysed for pollen, spores, diatoms, chironomids and tephra in order to uncover regional environmental history. The 6500-year environmental history of Lifebuoy Lake correlates with the broad regional patterns of vegetation development and climate dynamics with both diatoms and chironomids showing near-synchronous changes. Between ca. 6300 and 3900 cal yr BP, the lake ecosystem was naturally enriched, with several Stephanodiscus species dominating the diatom plankton. This natural eutrophication state is likely to be due to a combination of the base-rich catchment geology, the fertilisation effect of several fires in the catchment, silica input from tephra layers and, possibly, nitrogen input from seabirds. The substantial tephra deposit at about 3850 cal yr BP might have stopped sedimentary phosphorus from entering the lake water thus decreasing the trophic state of the lake and facilitating the shift in diatom composition to a benthic Fragiliariaceae complex. Both diatoms and chironomids showed simultaneous compositional changes, which are also reflected by statistically significant changes in their rates of change 300-400 years after the arrival of Pinus pumila in the lake catchment. The rapid increase in both total diatom concentration and the percentage abundance of the large heavy species, Aulacoseira subarctica might be a response to the change in timing and intensity of lake spring turnover due to the changes in the patterns of North Pacific atmospheric circulation, most notably westward shift Of the Aleutian Low. The two highest peaks in A. subarctica abundance at Lifebouy Lake occurred during opposite summer temperature inferences: the earlier peak (3500-2900 cal yr BP) coincided with warm summers and the latter peak (300 cal yr BP-present) occurred during the cold summer period. These imply that A. subarctica shows no direct response to the changes of summer air temperature. ... |
format |
Article in Journal/Newspaper |
author |
Solovieva, N. Klimaschewski, A. Self, A. E. Jones, V. J. Andren, E. Andreev, A. A. Hammarlund, D. Lepskaya, E. V. Nazarova, L. |
author_facet |
Solovieva, N. Klimaschewski, A. Self, A. E. Jones, V. J. Andren, E. Andreev, A. A. Hammarlund, D. Lepskaya, E. V. Nazarova, L. |
author_sort |
Solovieva, N. |
title |
The Holocene environmental history of a small coastal lake on the north-eastern Kamchatka Peninsula |
title_short |
The Holocene environmental history of a small coastal lake on the north-eastern Kamchatka Peninsula |
title_full |
The Holocene environmental history of a small coastal lake on the north-eastern Kamchatka Peninsula |
title_fullStr |
The Holocene environmental history of a small coastal lake on the north-eastern Kamchatka Peninsula |
title_full_unstemmed |
The Holocene environmental history of a small coastal lake on the north-eastern Kamchatka Peninsula |
title_sort |
holocene environmental history of a small coastal lake on the north-eastern kamchatka peninsula |
publisher |
ELSEVIER SCIENCE BV |
publishDate |
2015 |
url |
https://kups.ub.uni-koeln.de/38871/ |
long_lat |
ENVELOPE(160.000,160.000,56.000,56.000) ENVELOPE(-97.355,-97.355,58.475,58.475) |
geographic |
Kamchatka Peninsula Lifebuoy Lake Pacific |
geographic_facet |
Kamchatka Peninsula Lifebuoy Lake Pacific |
genre |
aleutian low Kamchatka Kamchatka Peninsula |
genre_facet |
aleutian low Kamchatka Kamchatka Peninsula |
op_relation |
Solovieva, N., Klimaschewski, A., Self, A. E., Jones, V. J., Andren, E., Andreev, A. A., Hammarlund, D., Lepskaya, E. V. and Nazarova, L. (2015). The Holocene environmental history of a small coastal lake on the north-eastern Kamchatka Peninsula. Glob. Planet. Change, 134. S. 55 - 67. AMSTERDAM: ELSEVIER SCIENCE BV. ISSN 1872-6364 |
_version_ |
1766266960663805952 |